Paper can



May. 16, 1939. c WALTER 2,158,165

PAPER CAN Filed Mai! 29, 1936 ATTORNEY Patented May 16, 1939 UNITED STATES PATENT OFFICE PAPER CAN Application May 29, 1936, Serial No. 82,433

1 Claim.

This invention relates to a container comprising fiber body walls and fiber ends held in place with a narrow metallic ring or ferrule.

One of the objects of the invention is to provide a fiber container of the metal ferrule type.

Other objects of the invention will be apparent from the description and claim which follow.

In the drawing similar reference characters in the several figures designate similar parts.

Figure 1 is a plan view of a metallic strip formed into a circle.

Figure 2 is a side view of the metallic strip shown in Figure 1.

Figure 3 is a plan view of the metallic strip shown in the previous figures after it has been flanged.

Figure 4 is a sectional view on line 4-4 of Figure 3.

Figure 5 is a sectional view of a cupped fiber disc.

The ferrule, as shown in Figures 1 and 2, comprises a relatively narrow metallic band provided at each of its ends and intermediate the side edges 3 and 4 with an extension, the extensions of the two ends being adapted to be interfolded in the form of an interlocked seam 2.

It will be noted that look seam 2 embraces only the central portion of the band and that only within the area of the lock seam are there more than one layer of metal. The central portion embraced by lock seam 2 is not flanged. The

ferrule l is first bent as shown in Figures 3 and 4 to form outwardly extending flange 5 and inwardly extending flange 6. Outwardly turned flange 5 provides metal for crimping over the can body. Inwardly turned flange 6 provides depth control for the metallic ferrule with respect to the seaming chuck and forms a flat guide surface to permit adjacent covers to rest and slide upon each other in the cover feeding mechanism.

Figure 5 illustrates a cupped fiber disc which 10 may be employed with the ferrule of the present invention. The cupped disc shown in Figure 5 comprises a flat disc portion 1, upwardly extending wall 8, and outwardly extending flange 9.

In use the ferrule I is fitted within the fiber 15 disc with the flange 5 against the flange 9. The disc and ferrule then are fitted within the end of a fiber tubular body and the flange 5 crimped against the outer wall of the tubular body by use of the conventional can seaming equipment.

I claim:

A ferrule for attaching an end closure to a container body comprising a band having an extension at each of its ends and intermediate the side edges thereof, said extensions being inter- 9 folded to form an interlocked seam, the portion of said band extended to one side of said extensions being flanged outwardly and the portion of said band extended to the opposite side of said extensions being flanged inwardly. 30

CHARLES T. WALTER. 

